Alert archive / South Dakota / Deuel County
Weather alerts in Deuel County, South Dakota, 2018
98 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Deuel County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 98
- Warnings
- 21
- Watches
- 8
- Advisories
- 45
- Busiest month
- April14 alerts
- Busiest day
- June 16, 20185 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Deuel County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 9 | 6 | 33% | 0 | ||
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Aberdeen, SD: tornado warnings | 7 | 2 | 71% | 9 | 33% | 8 min |
| NWS Aberdeen, SD: severe thunderstorm warnings | 233 | 158 | 32% | 290 | 82% | 17 min |
| NWS Aberdeen, SD: flash flood warnings | 12 | 11 | 8% | 16 | 69% | 142 min |
An office's figures cover every county it serves, including across state lines.
Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 1, 11:55 AM CST | Wind Chill Advisory | ABR | 22 hr |
| Jan 9, 4:18 AM CST | Winter Storm Watch | ABR | 23 hr |
| Jan 9, 4:18 AM CST | Winter Weather Advisory | ABR | 50 hr |
| Jan 11, 12:34 AM CST | Wind Chill Advisory | ABR | 34 hr |
| Jan 11, 11:42 AM CST | Wind Chill Advisory | ABR | 23 hr |
| Jan 14, 3:25 AM CST | Wind Chill Warning | ABR | 56 hr |
| Jan 14, 3:25 AM CST | Wind Chill Advisory | ABR | 56 hr |
| Jan 20, 3:38 AM CST | Winter Storm Watch | ABR | 24 hr |
| Jan 20, 2:19 PM CST | Winter Weather Advisory | ABR | 37 hr |
| Jan 22, 2:04 AM CST | Dense Fog Advisory | ABR | 13 hr |
| Jan 24, 3:35 AM CST | Dense Fog Advisory | ABR | 6 hr |
| Jan 24, 3:39 PM CST | Dense Fog Advisory | ABR | 18 hr |
| Feb 3, 3:19 AM CST | Wind Chill Advisory | ABR | 33 hr |
| Feb 9, 3:12 PM CST | Wind Chill Advisory | ABR | 19 hr |
| Feb 18, 2:41 PM CST | Winter Weather Advisory | ABR | 43 hr |
| Feb 20, 2:53 PM CST | Wind Chill Advisory | ABR | 19 hr |
| Feb 21, 2:38 PM CST | Winter Weather Advisory | ABR | 36 hr |
| Feb 23, 1:45 PM CST | Winter Weather Advisory | ABR | 31 hr |
| Feb 23, 11:20 PM CST | Dense Fog Advisory | ABR | 6 hr |
| Mar 4, 4:40 AM CST | Winter Storm Warning | ABR | 55 hr |
| Mar 21, 3:52 PM CDT | Winter Storm Watch | ABR | 24 hr |
| Mar 22, 5:50 AM CDT | Dense Fog Advisory | ABR | 8 hr |
| Mar 22, 3:25 PM CDT | Winter Storm Warning | ABR | 36 hr |
| Mar 22, 3:25 PM CDT | Winter Weather Advisory | ABR | 45 hr |
| Mar 23, 8:02 PM CDT | Mesoscale Discussion | SPC | 6 hr |
| Mar 25, 3:32 PM CDT | Winter Weather Advisory | ABR | 23 hr |
| Mar 30, 1:15 PM CDT | Wind Advisory | ABR | 21 hr |
| Apr 2, 4:12 AM CDT | Winter Weather Advisory | ABR | 36 hr |
| Apr 5, 2:46 AM CDT | Dense Fog Advisory | ABR | 7 hr |
| Apr 6, 3:34 PM CDT | Winter Storm Watch | ABR | 24 hr |
| Apr 6, 3:34 PM CDT | Winter Weather Advisory | ABR | 53 hr |
| Apr 8, 2:03 PM CDT | Winter Storm Warning | ABR | 6 hr |
| Apr 9, 7:42 AM CDT | Dense Fog Advisory | ABR | 3 hr |
| Apr 10, 2:36 PM CDT | Winter Storm Watch | ABR | 49 hr |
| Apr 12, 11:48 AM CDT | Blizzard Warning | ABR | 55 hr |
| Apr 14, 12:49 PM CDT | Winter Weather Advisory | ABR | 24 hr |
| Apr 17, 2:27 AM CDT | Winter Weather Advisory | ABR | 24 hr |
| Apr 21, 4:31 PM CDT | Areal Flood Warning | ABR | 48 hr |
| Apr 23, 11:51 AM CDT | Areal Flood Warning | ABR | 5 days |
| Apr 29, 3:52 AM CDT | Wind Advisory | ABR | 16 hr |
| Apr 30, 5:43 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 8, 2:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 22, 3:33 AM CDT | Dense Fog Advisory | ABR | 5 hr |
| May 25, 2:33 PM CDT | Severe Thunderstorm Warning | ABR | 42 min |
| Jun 6, 1:53 AM CDT | Severe Thunderstorm Warning | ABR | 52 min |
| Jun 6, 2:48 AM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 16, 3:06 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Jun 16, 3:38 PM CDT | Tornado Watch | SPC | 8 hr |
| Jun 16, 6:21 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 16, 6:31 PM CDT | Severe Thunderstorm Warning | ABR | 44 min |
| Jun 16, 6:59 PM CDT | Special Weather Statement | ABR | 31 min |
| Jun 16, 9:01 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jun 16, 10:17 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jun 24, 4:38 PM CDT | Severe Thunderstorm Warning | ABR | 37 min |
| Jun 29, 3:03 AM CDT | Heat Advisory | ABR | 16 hr |
| Jul 2, 9:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 2, 11:32 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 3, 6:16 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 7:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 10, 7:06 AM CDT | Severe Thunderstorm Warning | ABR | 24 min |
| Jul 10, 3:06 PM CDT | Heat Advisory | ABR | 29 hr |
| Jul 25, 5:07 AM CDT | Special Weather Statement | ABR | 23 min |
| Aug 3, 1:29 PM CDT | Severe Thunderstorm Warning | ABR | 46 min |
| Aug 3, 4:05 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Aug 3, 4:12 PM CDT | Severe Thunderstorm Warning | ABR | 37 min |
| Aug 26, 1:42 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 26, 10:55 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 27, 12:07 AM CDT | Special Weather Statement | ABR | 38 min |
| Aug 27, 12:17 AM CDT | Severe Thunderstorm Warning | ABR | 43 min |
| Sep 18, 2:48 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 18, 5:21 AM CDT | Severe Thunderstorm Warning | ABR | 24 min |
| Sep 18, 5:48 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 19, 3:47 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 28, 3:48 AM CDT | Freeze Warning | ABR | 28 hr |
| Oct 3, 3:24 AM CDT | Freeze Watch | ABR | 11 hr |
| Oct 3, 3:24 AM CDT | Wind Advisory | ABR | 18 hr |
| Oct 3, 2:51 PM CDT | Freeze Warning | ABR | 18 hr |
| Oct 27, 11:38 AM CDT | Wind Advisory | ABR | 11 hr |
| Oct 27, 7:37 PM CDT | Special Weather Statement | ABR | 53 min |
| Nov 15, 3:08 PM CST | Winter Weather Advisory | ABR | 33 hr |
| Nov 22, 1:39 AM CST | Dense Fog Advisory | ABR | 10 hr |
| Nov 27, 3:22 PM CST | Winter Weather Advisory | ABR | 27 hr |
| Nov 29, 8:25 PM CST | Dense Fog Advisory | ABR | 16 hr |
| Nov 30, 3:33 AM CST | Winter Weather Advisory | ABR | 47 hr |
| Nov 30, 6:23 PM CST | Dense Fog Advisory | ABR | 9 hr |
| Dec 12, 7:44 AM CST | Dense Fog Advisory | ABR | 5 hr |
| Dec 12, 3:21 PM CST | Dense Fog Advisory | ABR | 15 hr |
| Dec 13, 1:36 AM CST | Winter Weather Advisory | ABR | 5 hr |
| Dec 20, 10:23 PM CST | Dense Fog Advisory | ABR | 13 hr |
| Dec 25, 3:45 AM CST | Winter Storm Watch | ABR | 11 hr |
| Dec 25, 2:28 PM CST | Winter Storm Warning | ABR | 37 hr |
| Dec 26, 3:16 PM CST | Blizzard Warning | ABR | 45 hr |
| Dec 27, 6:07 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Dec 28, 2:07 PM CST | Wind Chill Advisory | ABR | 19 hr |
| Dec 29, 9:42 PM CST | Winter Weather Advisory | ABR | 5 hr |
| Dec 30, 2:36 PM CST | Winter Weather Advisory | ABR | 27 hr |
| Dec 30, 7:09 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Dec 31, 6:00 AM CST | Blizzard Warning | ABR | 12 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 9 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 20 |
| Special Weather Statement | 4 |
| Flooding | |
| Areal Flood Warning | 2 |
| Winter | |
| Blizzard Warning | 3 |
| Winter Storm Warning | 4 |
| Winter Storm Watch | 6 |
| Winter Weather Advisory | 17 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 2 |
| Wind Chill Warning | 1 |
| Freeze Watch | 1 |
| Wind Chill Advisory | 8 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 14 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.